This document discusses determining the genetic causes of familial mental retardation (MR) and whether there are differences in the underlying genetic causes between sporadic and familial MR that would require a different diagnostic approach for familial MR. It follows a typical scientific paper structure with an introduction, materials and methods, results, and discussion sections.

1. SR Ghaffari
M Rafati

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3.  Determining the genetic causes of “Familial MR”
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4.  Is there any differences between “Sporadic” and
“Familial” MR regarding their underlying genetic
causes?
 Should a different diagnostic approach be adopted for
“Familial” rather than “Sporadic” MR?
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5.  Introduction
 Materials and method
 Results
 Discussion
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